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Atoms and Molec...

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  • Question 1
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    A sample of vitamic C is known to contain $$2.58 \times10^{24}$$ oxygen atoms. How many moles of oxygen atoms are present in the sample?

  • Question 2
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    Which has more number of atoms: $$100$$ g of $$N_2$$ or $$100$$ g of $$NH_3$$?

  • Question 3
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    Raunak took 5 moles of carbon atoms in a container and Krish also took 5 moles of sodium atoms in another container of same weight. Whose container has more number of atoms?

  • Question 4
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    The visible universe is estimated to contain $$10^{22}$$ stars. How many moles of stars are present in the visible universe?

  • Question 5
    1 / -0

    Cations and anions present (if any) in $$NH_4NO_3$$ are :

  • Question 6
    1 / -0

    A sample of pure water, irrespective of source, contains 88.89% oxygen and 11.11% hydrogen
    by mass. The data supports the:

  • Question 7
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    The formula and molecular mass of common salt is :

  • Question 8
    1 / -0

    $$10.0\ g$$ of $$CaCO_{3}$$ on heating gave $$4.4\ g$$ of $$CO_{2}$$ and $$5.6\ g$$ of $$CaO$$. This observation is in agreement with the:

  • Question 9
    1 / -0

    Combined atoms have more:

  • Question 10
    1 / -0

    The formula and molecular mass of ethanol is:

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